管理型渠道 management channel

大型渠道 large canal

关系型营销渠道 Relational marketing channels ; relationship marketing channel

围边U型排水明渠 peripheral surface U channel

选择渠道类型 SELECT CHANNEL TYPE

渠道型水平式 Channel Master

大型水渠 Great Aqueduct

渠道模型 Model of Channel Structure

微型刚性衬砌渠段 minitype rigid lined canal